Today, online business has developed rapidly and there is a lot of commerce, however, blockchain technology plays a key role in creating a more secure data management system for online businesses that want their information to be confidential, blockchain technology leads them to greater stability and security, blockchain technology provides many benefits to online businesses, especially in the field of security, blockchain technology enables businesses to create a more secure and unchanging data management system that provides users with trust and stability in the online business system, blockchain technology enables them to increase their security, security, and security by using blockchain technology to solve the most common business problems, and block the ability to use data to monitor and record data, and block the ability to use data to manage data, and block the ability to use data to manage data, and block the ability to use data to manage data, and block the ability to use data to manage data, and block the ability to use data to manage data, and block the ability to use data to manage data, and block the ability to use data to manage data, and block the ability to use data to access data, and block the ability to use data to access data, and to use data security, and to use data security, and to use data security, and to use data security, and to use technology to make data security.